when you're alone, you can pretty much do whatever you want right? headbang, etc. But what about in public? if that one song comes up, do you find it almost impossible to sit still? or do you tap your foot, etc?

Depends. When I listen to post-rock or personal songs, alone. Metal, tap my feet as if I'm doing double bass or headbang. I sing or growl/scream with my friends cuz they don't mind (they're used to it).

idk i listen to music always, even when im with say my girlfriend or situations like that i still always bring my ipod, shit i once listenend to my ipod on the movies hahahah, idk the kind of song that gets me soo pumped i cant stay still would have to be I Dread The Night or Orchestra Of Wolves and when either one comes up, i cranck it up and headbang alot

Both. But you know, it is fun to drink and jam music really loud with friends. That's why we have a metal night almost once a week. Friends who enjoy the same music, love beer, and enjoy getting down to music.